The last time a royal baby held this title was in the mid-1800s by the children of Prince Adolphus and Princess Augusta — themselves Duke and Duchess of Cambridge — Prince George, Princess Mary and Princess Augusta of Cambridge.

By contrast, when William's cousin Zara Phillips has her baby — she announced her pregnancy today — the child will hold no title at all, as neither Zara nor her husband Mike Tindall hold one.

As far as the royal baby's first and middle names go, Alexandra and George are the popular bets amongst the British-betting public, but it's possible that Will and Kate themselves have not even decided yet. The two reportedly chose not to find out the gender of their baby, and the royals tend to take their sweet time deciding on names — Prince William wasn't named for a full week after he was born, while Prince Andrew and Sara, Duchess of York, did not name their daughters for two weeks.